LINING 4V2244 - Caterpillar

Illustration 1 g06208716
(1) Drain lines
(2) Adapter
(3) Valve
(4) Plunger
(5) Valve seatThe engine boost pressure forces plunger (4) to move down to valve seat (5). The plunger must close against the seat at a pressure of 2.8 kPa (0.41 psi). When the engine is stopped, the absence of boost pressure allows the plunger to rise to the open position. The plunger in the open position allows the condensation from the aftercooler to drain out. When the air shutoff is activated, vacuum will be created in the aftercooler. The plunger must be able to close with 2.4 kPa (0.35 psi) vacuum.The plunger must be able to move freely to close the system when the engine is running and when the air shutoff is activated. The plunger must be able to move freely to allow condensation to drain from the aftercooler when the engine is stopped. Residue from normal engine operation could cause the plunger to stick.
Remove valve (3) from adapter (2). Check the valve to determine if plunger (4) moves freely. If the plunger does not move easily, clean the valve with solvent.
Remove drain lines (1). Check the lines for plugging. Clean the lines, if necessary. Pressure air or a flexible rod with a small diameter can be used to clean the lines.
Reassemble the aftercooler condensate drain valve. For the proper torque, refer to the Specifications Manual, SENR3130, "Torque Specifications".